Levels of wildlife organization: short description

All living beings on the planet are divided into different groups and systems. Biology tells a student about this in elementary school. Now I want to study in great detail the levels of organization of living nature, eventually presenting all the knowledge gained in a brief and easy-to-understand table.

wildlife organization levels

Little about levels

Generally speaking, science has 8 such levels. But what is the principle of division? Everything is simple here: each successive level incorporates all the previous ones. That is, it is larger and more substantial, larger and fuller.

Level One - Molecular

This level is studied in detail in molecular biology. What is this about? What is the structure of proteins, what functions do they perform, what are nucleic acids and their work in genetics, protein synthesis, RNA and DNA — all these processes impose a molecular level. It is here that the most important vital processes of all organisms begin: metabolism, the production of energy necessary for existence, etc.Scientists say that this level can hardly be called alive, it is more likely considered chemical.

Level Two - Cellular

What is interesting cellular level of the organization of wildlife? It follows the molecular and, as the name already becomes clear, deals with the cells. The biology of these particles is studied by such science as cytology. The cell itself is the smallest indivisible particle in the human body. Here we consider all the processes that are directly related to the vital activity of the cell.

cell level organization of wildlife

Level three - fabric

Experts also call this level multicellular. And this is not surprising. Indeed, in essence, tissue is a collection of cells that have almost the same structure and similar functions. If we talk about the sciences that study this level, then we are talking about the same histology, as well as histochemistry.

Level Four - Organ

Considering the levels of organization of wildlife, you must also tell about organ. What is it special? Thus, organs are formed from tissues in multicellular organisms and organelles in unicellular organisms. The sciences that deal with these issues are anatomy, embryology, physiology, botany, and zoology.

It should also be noted that, studying the levels of organization of living nature, experts sometimes combine tissue and organism into one chapter. After all, they are very closely related to each other. In this case we are talking about the organ-tissue level.

Level Five - Organizational

The next level is called in the science of "organism." What is it different from the previous ones? Apart from the fact that it includes previous levels of the organization of wildlife, it also divides into kingdoms - animals, plants, and also mushrooms. He deals with the following processes:

  • Food.
  • Reproduction.
  • Metabolism (as at the cellular level).
  • The interaction is not only between organisms, but also with the environment.

In fact, there are still very many functions. This section deals with such sciences as genetics, physiology, anatomy, morphology.

levels of structural organization of wildlife

The sixth level - population-specific

It's also all simple. If some organisms have morphological similarity, that is, they are approximately the same structure and have a similar genotype, scientists combine them into one species or a population. The main processes that occur here- this is macroevolution (that is, a change in the organism under the influence of the environment), as well as interaction with each other (this can be both a struggle for survival and reproduction). The study of these processes involved in ecology and genetics.

Seventh level - biogeocenotic

The name is tough, but quite simple. Comes from the word biogeocenosis. There are already considered multiple processes in which the interaction of organisms. It is also about food chains, about competition and reproduction, about the mutual influence of organisms and the environment on each other. The science of ecology deals with these issues.

Last, eighth level - biosphere

There is already biology designed to solve all global problems. After all, in essence, the biosphere is a huge ecosystem, where the circulation of chemical elements and substances occurs, the processes of energy conversion to ensure the vital activity of all life on earth.

wildlife organization levels table

Simple conclusions

Having considered all levels of the structural organization of living nature, and they, as it became clear, 8, one can imagine a picture of all life on earth.After all, only by structuring your knowledge, you can thoroughly understand the essence of the above.





Either individual or organism

Differentiation processes occur.

Population Species


The processes of genotype change in this population



The circulation of substances

Molecular genetic


Activity - the transfer of genetic information within cells

What is the easiest way to imagine the organization levels of wildlife? The table is what perfectly illustrates any material. But to facilitate understanding, scientists often only put up the 4 combined levels presented above in a table.

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